The IRS4426S is a high-speed power MOSFET driver from International Rectifier (now Infineon Technologies). It is designed to drive both high-side and low-side N-channel MOSFETs in a half-bridge configuration. This driver provides the necessary gate drive voltage and current to efficiently switch power MOSFETs in various applications.

Applications:

• Switch-mode power supplies (SMPS)
• DC-DC converters
• Motor drives
• Uninterruptible power supplies (UPS)

Features:

• Floating channel designed for bootstrap operation
• Typically 200mA sourcing current and 350mA sinking current
• 3.3V, 5V and 15V input logic compatible
• Matched propagation delay for both channels
• Undervoltage lockout (UVLO) protection

Benefits:

• Allows for driving high-side N-channel MOSFETs using bootstrap circuitry.
• Provides sufficient gate drive current for efficient MOSFET switching.
• Simplifies interfacing with various logic controllers.
• Ensures accurate timing in half-bridge configurations.
• Protects the MOSFETs from damage due to low supply voltage.

Additional Details:

The IRS4426S operates with a supply voltage range of 10V to 20V. It features a floating channel that can be used to drive a high-side N-channel MOSFET. The driver provides a typical sourcing current of 200mA and a sinking current of 350mA. The input logic is compatible with 3.3V, 5V, and 15V logic levels. The propagation delay is matched between the high-side and low-side channels to ensure accurate timing. The UVLO protection prevents the MOSFETs from being driven when the supply voltage is too low. The device comes in an 8-lead SOIC package.

This MOSFET driver is commonly used in applications where efficient and reliable switching of power MOSFETs is required. Its features and performance make it suitable for a wide range of power conversion and motor control applications.